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Volume 16 (1985 - 198･･･
- Issue 3 Pages 5-
- Issue 2 Pages 5-
- Issue 1 Pages 6-
Volume 16, Issue 2
Displaying 1-5 of 5 articles from this issue
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Seiichirou ISOBE, Shyusaku KATAYAMA, Shinji HOSHIBA, Jun DOHKOSHI1985 Volume 16 Issue 2 Pages 5-10
Published: November 30, 1985
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSThe construction and operation of slatted floor in a free stall dairy barn have been studied in order to obtain basic data for designing slatted floors. The results are as follows. The mean setting space of slats was 45.2mm. Feces remained on the slats decreased as cow density increased. Eight cases of foot rot or contution were observed for the first year of the operation. The slatted floor system was found to be a labor-saving system. Only 20% of average time for getting rid of feces from general Japanese barns was spent in this barn.View full abstractDownload PDF (2235K) -
On the Generation by Drying Process of Rough RiceTomoyuki SENO1985 Volume 16 Issue 2 Pages 11-18
Published: November 30, 1985
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSIn order to get the basic information on the generation of grain dust from rough rice, the auther measured the quantity of dust which discharged from rice drying and processing facility. The results obtained were summarized as follows;
(1) The rough rice dust were measured in following classified three steps; fine, intermediate, and coarse dust. These were recognized that the variation of dust quantity was not large at the process of rough rice drying, and was discharged in stable rate, comparatively.
(2) Based on the measured results, the rate of dust which discharged from 1 tonnage of rough rice was 1.059Kg/ton in coarse dust, 0.251Kg/ton in intermediate dust, 0.308Kg/ton in fine dust, and 1.618Kg/ton in total of the dust.
(3) It was proved to show the particle-size-distribution of grain dust, the Rosin-Rammler's chart and Rosin-Rammler-Bannet's equation were available. And it was examined on R. R. B.'s equation between measured value and calculated value.View full abstractDownload PDF (885K) -
Tomoyuki SENO1985 Volume 16 Issue 2 Pages 19-28
Published: November 30, 1985
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSIn this report, the author investigated the characteristics of concentration and particle-size distribution of airborne grain dust in the rice drying and processing facilities.
Comparison was taken on 6 kinds of the instruments and methods to measure the concentration of airborne grain dust, and each of the properties were proved.
It was proved that the existence of grain hair (trichome), and its average length was about 200μm. The linear correlation was recognized between the concentration of Total Dust and the ratio of the particle less than 10μm to the Total Dust.
Based on measured results, it was recognized that linear correlation was existed in the concentraton of Total Dust and Respirable Dust. From the regression equation, it was showed that 7.5% of Total Dust was equivalant to the quantity of Respirable Dust.
It was discussed on the means of standard value of permitted concentration, and applying to co-operative facilities, further, about the quantity and quality of the labor in the facilities. Based on these discussion, the threthold concentration of the dust was proposed that; for the Total Dust, standard value is 10mg/m3, and goal value is 8mg/m3; and for the Respirable Dust, both of standard and goal value are 1mg/m3.View full abstractDownload PDF (1437K) -
T. MIYAZAKI, S. -L. WANG, Y. HARA, T. MAEKAWA1985 Volume 16 Issue 2 Pages 29-34
Published: November 30, 1985
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSGrowth of the ammonium-tolerant green alga Scenedesmus quadricauda was examined in effluents from methane fermentors which used swine wastes as a substrate. The alga grew well in 1% and 10% effluents, but did not grow in 20% effluents. The addition of ammonium of 0 to 28mM to the 1% effluents did not affect rate constants for growth. The addition did not also affect photosynthetic activities during the exponential phase of growth. Potosynthetic activities in the 10% effluents were lower, but were still comparable to the activity in the 1% effluents. Electron micrographs showed that starch granules were prominent in cells grown in 1% effluents with no addition of ammonium, and became smaller with the increased addition of ammonium. In the 10% effluents, the starch granules were small and the membrane systems of chloroplasts were well developed, although the cells were swollen. These results indicate that growth and physiology did not vary so much in the 1% and the 10% effluents, though the morphology changed a little. Percentage of removal of ammonium-nitrogen and phosphate-phophorus in the 1% effluents was 99.7 and 73.8%, respectively. In the 10% effluents, the percentage was 78.0% for ammonium and 62.8% for phosphate. This removal efficiency suggests that S. quadricauda can be used for the treatment of effluents after methane fermentation of livestock wastes.View full abstractDownload PDF (4541K) -
Kohki SHIO, Takemi MACHIDA1985 Volume 16 Issue 2 Pages 35-43
Published: November 30, 1985
Released on J-STAGE: September 05, 2011
JOURNAL FREE ACCESSJapanese agriculture will be greatly influenced by the progress of the information society in near future. In agriculture, some organizations such as Agricultural corporation and Agricultural management centers, and also the individual farm managers have already introduced the many computers, and they are making effort to improve the agricultural management. But, under existing conditions, the agricultural systems are not equiped completely, and many problems exist in the various organizations and bussiness.
In this paper, the authors analysed the existing situations of the agricultural information systems and considered about the problems in detail.View full abstractDownload PDF (1463K)
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